egypt is trying to prevent this war from getting out of hand. spearheading talks aimed at ending the violence. israel's prime minister says hamas can end all this. ben wedeman is watching the conflict play out. >> reporter: we've seen apparent urgent action by the israeli army in this area to get as much material, tanks, armored personnel carriers and troops in the area around gaza in obvious preparation for a potential ground invasion of the gaza strip. but a decision to actually go in has to come from the leadership, from prime minister benjamin netanyahu and from his security cabinet. that has not come yet. on sunday, it's expected that the secretary general of arab league is going to come to gaza with four arab foreign ministers. it may be difficult to launch a ground invasion while just a high-level group is there. we understand that intense contacts are under way between israel and the united states to potentially talk about a cease-fire. i spoke with a senior israeli spokesman who flatly denied reports that some sort of negotiated cease-f